linux-kernel - Re: [PATCH v2] mfd: arizona: Add DT options for max_channels

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Date:   Fri, 2 Sep 2016 16:56:24 +0100
From:   Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
To:     Rob Herring <robh@...nel.org>
CC:     <lee.jones@...aro.org>, <patches@...nsource.wolfsonmicro.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] mfd: arizona: Add DT options for
 max_channels_clocked and PDM speaker config

On Fri, 2016-09-02 at 10:34 -0500, Rob Herring wrote:
> On Wed, Aug 31, 2016 at 10:25:43AM +0100, Richard Fitzgerald wrote:
> > This patch adds DT settings for the max_channels_clocked, spk_fmt and
> > spk_mute pdata.
> > 
> > Signed-off-by: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
> > ---
> >  Documentation/devicetree/bindings/mfd/arizona.txt | 11 ++++++++
> 
> Binding looks fine, but...
> 
> >  drivers/mfd/arizona-core.c                        | 31 +++++++++++++++++++++++
> >  2 files changed, 42 insertions(+)
> 
> > diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
> > index b95ff2d..36a9633 100644
> > --- a/drivers/mfd/arizona-core.c
> > +++ b/drivers/mfd/arizona-core.c
> > @@ -816,6 +816,37 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
> >  		count++;
> >  	}
> >  
> > +	count = 0;
> > +	of_property_for_each_u32(arizona->dev->of_node,
> > +				 "wlf,max-channels-clocked",
> > +				 prop, cur, val) {
> > +		if (count == ARRAY_SIZE(pdata->max_channels_clocked))
> > +			break;
> > +
> > +		pdata->max_channels_clocked[count] = val;
> > +		count++;
> > +	}
> 
> of_property_read_u32_array doesn't work for you?

No, it doesn't, because it doesn't read a variable-sized array.

> 
> > +
> > +	count = 0;
> > +	of_property_for_each_u32(arizona->dev->of_node, "wlf,spk-fmt", prop,
> > +				 cur, val) {
> > +		if (count == ARRAY_SIZE(pdata->spk_fmt))
> > +			break;
> > +
> > +		pdata->spk_fmt[count] = val;
> > +		count++;
> > +	}
> > +
> > +	count = 0;
> > +	of_property_for_each_u32(arizona->dev->of_node, "wlf,spk-mute", prop,
> > +				 cur, val) {
> > +		if (count == ARRAY_SIZE(pdata->spk_mute))
> > +			break;
> > +
> > +		pdata->spk_mute[count] = val;
> > +		count++;
> > +	}
> > +
> >  	return 0;
> >  }
> >  
> > -- 
> > 1.9.1
> > 
> > --
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